Certified Peptides is one of the better-documented vendors in its price range, with a large catalog and mixed pricing. As of October 19, 2026, it publishes lot-matched COAs that name Vanguard, mentions endotoxin testing and has 13 independent tests on Finnrick. It doesn't publish a company name, address or payment methods.
Notice: Certified Peptides' products are sold for in-vitro laboratory research only. They are not FDA-approved and not for human or animal use. This review covers supplier transparency and prices only. We didn't buy or test any products. Some vendors pay us a commission when you buy through our links. That never changes a score or a price ranking.
Certified Peptides at a glance
- Website: certified-pep.com, live when checked.
- Based in: not published on its site when we checked on October 19, 2026.
- Company: no legal entity or founding year published.
- Testing labs/COAs: Vanguard named; lot-matched COAs on a COA page.
- Independent tests (Finnrick): 13 tests listed on Finnrick, most recent September 10, 2026.
- Payment: not published on its site when we checked.
- Gate: none. Prices are public.
- Catalog: 60 peptide products listed, plus bioregulator, capsule and lipotropic sections.
- Checked: October 19, 2026.
Prices we checked
Prices from certified-pep.com on October 19, 2026. "Per mg" is the best per-mg price we found for that compound.
| Peptide | Size | Price | Per mg | vs index median |
|---|---|---|---|---|
| Tirzepatide (listed as GLP2-T) | 60mg | $210.00 | $3.50 | 42% below |
| Semaglutide (listed as GLP1-S) | 5mg | $100.00 | $20.00 | 115% above |
| BPC-157 | 20mg | $90.00 | $4.50 | 25% below |
| TB-500 | 10mg | $70.00 | $7.00 | 8% below |
| GHK-Cu | 100mg | $59.00 | $0.59 | 16% below |
| NAD+ (buffered) | 1000mg | $130.00 | $0.13 | at median |
| MOTS-c | 40mg | $160.00 | $4.00 | 11% below |
| Epitalon | 50mg | $110.00 | $2.20 | 41% below |
| CJC-1295 (no DAC) + ipamorelin | 10mg | $45.00 | $4.50 | 25% below |
| KPV | 10mg | $76.00 | $7.60 | 38% above |
Tirzepatide pricing depends heavily on size: the 10mg vial was $124.00, while the 30mg was $140.00. We didn't find retatrutide in its public price list. Compare tirzepatide prices, semaglutide prices and BPC-157 prices in our price index.
Testing and COAs
Certified Peptides has a COA page and a separate lab testing page. The site names Vanguard as a testing lab, shows lot or batch numbers alongside its COAs, and mentions endotoxin or sterility testing. That combination lets you tie a certificate to a production run and a named lab. We list the lab as named by the vendor; we didn't verify it.
Finnrick lists 13 independent tests for Certified Peptides, the latest on September 10, 2026. We don't report Finnrick ratings, so check results there for the compound you need.
What we like
- A named lab (Vanguard) and lot-matched COAs.
- Endotoxin or sterility testing mentioned.
- 13 independent tests on Finnrick.
- Large catalog with public prices and no gate.
- Tirzepatide, BPC-157 and epitalon well below the index median.
What to watch
- No company name or address published.
- Payment methods aren't listed publicly.
- Semaglutide is more than double the median per mg.
- KPV, PT-141 and melanotan 2 were 25-38% above the median.
- Small tirzepatide vials cost much more per mg than the 60mg.
How it compares
Certified Peptides offers more testing detail than many vendors at similar prices. See all vendors we track, peptide deals this week and our ranked list.
Bottom line
Certified Peptides pairs named-lab, lot-matched COAs with independent Finnrick tests and strong prices on several compounds. The main gaps are company disclosure and uneven pricing. Compare per-mg costs by size before ordering.
